Ultrafast Thermal Transport Mechanisms at Organic/Inorganic Nanoscale Interfaces
Abstract
The objective of the proposal is to systematically study ultrafast thermal transport at organic/inorganic nanoscale interfaces such as organic polymer /ZnO and organic polymer/MoS2 etc. The PI proposes to use molecular engineering of organic/inorganic interfaces to control the charge and vibrational-based thermal transport processes at hybrid contacts. He proposes to use pump-probe experimental set-ups (time-domain thermoreflectance TDTR, ultrafast pump-probe etc.) with femtosecond laser sources to monitor the temperature changes and electron dynamics during and after the laser excitation. More specifically, the PI proposes to study novel physics of ultrafast heat transfer mechanisms in hybrid nanomaterials involving semiconducting organic polymer/zinc oxide (ZnO) interfaces and semiconducting (2H) and metallic(1T) phases of multilayer molybdenum disulfide (MoS2) etc. The PI proposes to do all experiments over a range of temperatures (~30 Ð 500 K) and applied electric fields to assess the role of carrier statistics and field effects on the thermal relaxation at the proposed organic/inorganic interfaces. ZnO layers will be grown by chemical solution deposition technique. MoS2 samples will be processed in collaboration with a scientist at Sandia National Laboratories.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jan 12, 2017
- Source ID
- W911NF1610320
Entities
People
- Patrick Hopkins
Organizations
- Army Contracting Command
- United States Army
- University of Virginia